Foremost among the sexual perversions explored in the so-called "nasty" games, voyeurism, or spying, probably reached its greatest heights in orphanage and boarding school settings, although it flourished in the doll games wherever private spaces (often marked by segments of rug — see Rug) existed to be violated by curious eye and ear The ubiquity of the practice within the doll games must surely be read in part as a commentary by the authors upon their own voyeuristic relation to the doll world, and may also register a certain paranoia regarding the "parental voyeur" possibly lurking on the other side of the door to Shelley’s room.